An SN 528 plummer block is a type of bearing housing designed to support rotating shafts while ensuring proper alignment and reducing friction. It is typically used with self-aligning ball bearings or spherical roller bearings to accommodate misalignment and provide excellent load-bearing capabilities.
SN 528 Plummer Block:
Summary
- Item Code: SN 528
- Item Type: Plummer Block (Bearing Housing)
- Shaft Diameter (d): 125 mm or 5″
- for Bearing with Adaptor Sleeve: 22228 K + H 3128, 23228 K + H 2328
Structure
Nominal number of Plummer Block and bearing
1 How to indicate the basic number and auxiliary symbol
Basic number
I) Plummer block model symbol
- ・SN (S) : Two-split standard model
- ・SNZ : Two-split standard model, different bore type
- ・SD : Two-split heavy load type, equipped with double seal
- ・SV : Integrated type
Plummer Block Housing Specifications
| Specification | Details |
|---|---|
| Shaft Diameter | 125 mm |
| Housing Width | 510 mm |
| Base Height | 177 mm |
| Bolt Size | M20 |
| Distance Between Bolts | 380 mm |
| Housing Weight | ~35 kg |
Note: The SN 528 Plummer Block can handle high radial and axial loads, making it a preferred choice for heavy-duty applications.
SN 528 Plummer block bearing number
| Designations | Spherical Roller Bearings | Adapter Sleeve | Oil Seal | Locating Ring Designation | Qty | Y (Reference) | |
| Through Shaft Type | Shaft End Type | ||||||
| SN528F | SN628FE | 22228EKX 23228EK | H3128 H2328 | GS28 | SR250×15 SR250×10 | 2 1 | 60 70 |
| SN628F | SN628FE | 22328EKX | H2328 | GS28 | SR300×10 | 1 | 77 |
Lubrication
Volume of grease filled into models SN5 and SN6
| Bearing Number | Grease volume (g) |
| SN528 | 800～1 200 |
| S628 | 1 300～2 000 |
Bearing Greasing Quantity Formula
The formula to calculate the amount of grease needed for a bearing is
G= Bearing OD × Baring width × 0.005
- G : The amount of grease in grams
OD : The bearing’s outside diameter in millimeters
B : The bearing’s width in millimeters
Key Components of SN 528 Plummer Block:
- Housing: Made from high-strength cast iron or steel for durability.
- Bearing: Holds the rotating shaft in place while minimizing friction.
- Seals: Protects the bearing from contaminants like dust and moisture.
- Lubrication System: Ensures smooth operation and extends service life.
This plummer block is widely chosen for heavy industrial applications due to its ability to withstand extreme conditions and heavy loads.
Technical Specifications of SN 528 Plummer Block
When considering an SN 528 plummer block, it’s crucial to understand its technical specifications to ensure compatibility with your application.
Material Composition:
- Typically made of cast iron, offering excellent strength and resistance to wear.
- Some variations may include ductile iron or steel for added durability.
Dimensional Details:
- Shaft Diameter: Ranges from 125mm to 140mm, depending on the bearing used.
- Overall Length and Width: Ensures compatibility with various mounting arrangements.
Load Capacity and Performance:
- Designed to handle both radial and axial loads efficiently.
- Ideal for high-speed applications with minimal maintenance requirements.
Types of Bearings Compatible with SN 528
The SN 528 plummer block is designed to accommodate a range of bearing types, ensuring flexibility across different applications. Choosing the right bearing type is crucial for the optimal performance of the plummer block.
1. Ball Bearings
- These bearings are ideal for applications requiring low friction and high-speed operation.
- Self-aligning ball bearings work well with SN 528, allowing for slight misalignment without compromising performance.
- Commonly used in industries such as food processing and light-duty conveyors.
2. Roller Bearings
- Spherical roller bearings are commonly paired with SN 528 plummer blocks for heavy-duty applications.
- They can handle high radial and axial loads while compensating for shaft deflections.
- Ideal for mining equipment, cement plants, and heavy machinery.
3. Application-Specific Bearings
- For specialized environments, such as high temperatures or corrosive conditions, customized bearings like ceramic or stainless-steel variants are available.
- These ensure enhanced longevity and resistance to harsh environments.
Selecting the right bearing type ensures the longevity and reliability of the SN 528 plummer block in your specific application.
Applications of SN 528 Plummer Block
3. Mining and Heavy Equipment
The versatility of the SN 528 plummer block makes it suitable for a wide range of industrial applications. Whether it’s heavy-duty machinery or precision engineering, this plummer block is up to the task.
1. Industrial Machinery
- Used in rotating equipment such as compressors, turbines, and pumps.
- Provides robust support and reduces operational wear and tear.
- Ensures reliability and efficiency in demanding industrial environments.
2. Conveyor Systems
- Essential in logistics, manufacturing, and food processing plants.
- Ensures smooth operation by reducing vibrations and providing optimal alignment.
- Capable of handling both horizontal and inclined conveyor setups.
- Withstands extreme conditions, including dust, moisture, and heavy loads.
- Used in crushers, mills, and material handling systems.
- Ensures maximum uptime and reduced maintenance requirements.
By incorporating SN 528 into these applications, businesses can achieve higher productivity and longer service life for their machinery.
Advantages of Using SN 528 Plummer Block
The SN 528 plummer block offers numerous benefits, making it a preferred choice in various industries. Some of the key advantages include:
1. Durability and Longevity
- Made from high-strength materials like cast iron or steel, ensuring resistance to wear and impact.
- Capable of withstanding harsh environmental conditions, including temperature fluctuations and heavy vibrations.
2. Ease of Maintenance
- Split housing design allows for easy bearing inspection and replacement without disassembling the entire system.
- Accessible lubrication points help in maintaining smooth operation over extended periods.
3. Cost-Effectiveness
- Provides a long-term solution with minimal operational downtime.
- Reduces maintenance costs due to its robust construction and ease of replacement.
By leveraging these advantages, businesses can optimize their operational efficiency while minimizing unexpected breakdowns.
Installation Guide for SN 528 Plummer Block
Proper installation of the SN 528 plummer block is crucial to ensure its efficiency and longevity. Follow these steps to achieve a seamless setup:
Step 1: Preparation
- Clean the shaft and housing area thoroughly to remove dirt, rust, or contaminants.
- Check the shaft diameter to ensure compatibility with the plummer block bearing.
Step 2: Positioning the Housing
- Align the housing with the mounting surface, ensuring it is level and centered.
- Use shims if necessary to achieve proper alignment.
Step 3: Bearing Installation
- Carefully insert the bearing into the housing, ensuring a snug fit.
- Apply the recommended lubricant to reduce friction during operation.
Step 4: Securing the Plummer Block
- Tighten the mounting bolts gradually and evenly to avoid misalignment.
- Double-check for any gaps or misalignments before operating the machinery.
FAQ:
1. What are the standard dimensions of SN 528 Plummer block?
The standard dimensions include bore diameter, housing length, and bolt spacing, which vary by manufacturer specifications.
2. How often should SN 528 Plummer block be lubricated?
Lubrication intervals depend on operating conditions but typically range from every 3 to 6 months.
3. Can SN 528 Plummer block be used in extreme temperatures?
Yes, with the correct type of lubricant and seals, it can function efficiently in extreme hot or cold environments.
4. What are the common replacement parts for SN 528?
Typical replacement parts include seals, bearings, and housing bolts.
5. Where can I purchase SN 528 Plummer blocks?
They can be purchased from industrial suppliers, authorized distributors, and online marketplaces.
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